Salary: £52,000 - 87,000 per year Requirements: Expert-level Ruby on Rails experience Strong React experience Proven experience with PostgreSQL Strong TypeScript knowledge Node.js expertise Proficient in AWS infrastructure Experience managing high-performing technical teams Familiarity with improving SDLC processes Confidence in reviewing code and overseeing third-party engineering Strong understanding of DevOps and CI/CD Experience implementing AI development tools (e.g. Copilot, Cursor) Automotive, leasing or CAP data experience (advantageous but not essential) 6 years of experience in Principal Software Engineering (required) 5 years of experience in PostgreSQL and React (required) 5 years of experience in Ruby on Rails (required) Work authorization in the United Kingdom (required) Responsibilities: Design and evolve scalable, secure system architecture across our platform Write high-performance, production-ready code in Ruby on Rails, React, Node.js, and TypeScript Own and optimize our PostgreSQL database strategy for high-volume performance Line manage and mentor a small team of senior engineers and QAs Oversee delivery quality from outsourced partners, ensuring internal standards are met Refine Jira workflows and improve our overall Software Development Life Cycle (SDLC) Champion CI/CD best practices and cloud-native scaling within AWS Research and implement AI-assisted engineering tools to improve productivity and quality Collaborate with Product Managers to shape technical roadmaps aligned to business goals Technologies: AI AWS CI/CD Cloud Copilot Cursor DevOps JIRA PostgreSQL Rails React Ruby TypeScript NodeJS Architect Support More: We are a market-leading automotive business transforming into a cutting-edge, tech-enabled mobility platform, and were looking for an exceptional, hands-on Principal Software Engineer to join our hybrid team in Reading. We offer a competitive salary and benefits package, including flexible working arrangements, company events, enhanced maternity and paternity leave, health and wellbeing programs, and career progression opportunities. As part of our forward-thinking, technology-driven culture, youll have the chance to influence the technical direction of our business and lead innovative projects that drive the future of mobility. last updated 10 week of 2026